"I WILL DO THEM LATER" IS WRONG
Hadrat Imâm-i Rabbânî says in the 96th letter of the first volume of his Maktûbât:
This letter, written to Muhammad Sherîf, explains that those who do not perform the acts of worship and good deeds within their proper times and who say, “I will do them tomorrow,” or “I will do them later,” are wrong; and that it is necessary to adhere to Hadrat Muhammad’s way Islam:
Youth is a time when the nafs boils, the sensual desires frolic about and fiendish people and satanic genies attack. A little goodness done at such an age will be given much thawâb. When old, when worldly pleasures are on the decline, when power and strength are gone, and when there is no longer any possibility or hope of getting what is desired, nothing can be done except to sigh. Many people do not have a share even from that time of regret. That regret means repentance and is still a great blessing. Many cannot reach those days.
The eternal torments and various sufferings, which our Prophet communicated, will certainly take place, and everybody will get their deserts. Today, wicked people and devilish genies deceive us by putting forth Allah’s forgiveness and compassion and prevent us from worshipping and drag us towards sinning. However, one should know well that this world is a place of examination. Therefore, the darlings and the enemies are put together here, and all of them are pitied. Indeed, He declares in the hundred and fifty-fifth âyat of Sûrat-ul-A’râf: “My mercy includes everything.” But on the Day of Rising the enemies will be separated from the darlings. The âyat, “O kâfirs! Today separate from those whom I love!” in Sûrat-u Yâsin, communicates this fact. On that day, only the darlings will be pitied; there won’t be any mercy for the enemies, who will certainly be accursed. As a matter of fact, the âyat, “On that day, My mercy will include only those who, fearing Me, avoided being kâfirs and sinning, paid zakât, and believed the Qur’ân and My Prophet,” in Sûrat-ul-A’râf, conveys that this will be so. Then, on that day, the mercy of Allâhu ta’âlâ will be given to the ebrâr, that is, to those Muslims with good habits and useful deeds. Yes, all Muslims, all those with îmân as much as even a mote, will attain mercy in the end, after staying in Hell for a long time. But, for attaining mercy, it is necessary to die with îmân. Nevertheless, when the heart darkens from sinning, when the commands and prohibitions of Allâhu ta’âlâ are slighted, how can the light of îmân be protected from going out during the final breath? Great men of the religion say: “Continuing venial sins causes grave sins. And continuing grave sins drifts one into becoming a disbeliever.” May Allâhu ta’âlâ protect us against being so!